MY and NY3 2 nearly insoluble salts have the same Ksp value of 6 02 ×10^-13 at room temperature - Chemistry - Chemical and Ionic Equilibrium

Question

MY and NY3 2 nearly insoluble salts have the same Ksp value of 6 02
×10^-13 at room temperature Which statement would be true in
regard to MY and NY3 1)the addition of the salt of KY to the
solution of MY and NY3 will have no effect on their solubilities
2)The salts MY and NY3 are more soluble in 0 5 M KY than in pure
water 3) The molar solubility of MY in water is less than NY3

Vartika Jain · Accepted Answer

Dear Student,

MY → M + Y             s       sKsp = (s)(s) = s2and, Ksp = 6
2×10-13or, s2= 6 2×10-13or, s= 6
2×10-13=7
87×10-7 molL-1NY3 → N + 3Y               s      3sKsp=(s)(3s)3= 27s4and, 27s4= 6
2×10-13or, s=( 6
2×10-1327)14or, s= 3
89×10-4 molL-1Therefore, molar solubility of NY3 is more than MY in water
Hence, correct answer is (3)